一质量为0.01kg的物体作简谐振动,其振幅为0.24m,周期为4.0s,当t=0时位移为0.24m,则此时质点的加速度为[ ]
A: [img=78x27]18037478791bbbb.png[/img]
B: [img=64x27]180374788187aaa.png[/img]
C: [img=64x27]1803747889c3578.png[/img]
D: [img=78x27]180374789306933.png[/img]
A: [img=78x27]18037478791bbbb.png[/img]
B: [img=64x27]180374788187aaa.png[/img]
C: [img=64x27]1803747889c3578.png[/img]
D: [img=78x27]180374789306933.png[/img]
举一反三
- 一质量为0.01kg的物体作简谐振动,其振幅为0.24m,周期为4.0s,当t=0时位移为0.24m,则此时质点的加速度为[ ]
- 一质点作简谐振动,振动方程为x = A cos(ωt + φ) ,当时间t = T/2(T 为周期)时,质点的速度为[ ] A: [img=76x23]1803252262437ec.png[/img] B: [img=62x23]180325226a6f193.png[/img] C: [img=76x23]1803252272d9a4f.png[/img] D: [img=62x23]180325227b19e73.png[/img]
- 一质点作简谐振动,振动方程为x = A cos(ωt + φ) ,当时间t = T/2(T 为周期)时,质点的速度为[ ] A: [img=76x23]1803d313955d0f7.png[/img] B: [img=62x23]1803d3139dc58d0.png[/img] C: [img=76x23]1803d313a6085e2.png[/img] D: [img=62x23]1803d313ade9086.png[/img]
- 一质点作简谐振动,振动方程为x = A cos(ωt + φ) ,当时间t = T/2(T 为周期)时,质点的速度为[ ] A: [img=76x23]1803a91b87be24c.png[/img] B: [img=62x23]1803a91b90a1944.png[/img] C: [img=76x23]1803a91b98bac8b.png[/img] D: [img=62x23]1803a91ba1ba43a.png[/img]
- 一质点作简谐振动,振动方程为x = A cos(ωt + φ) ,当时间t = T/2(T 为周期)时,质点的速度为[ ] A: [img=76x23]1803d3155a4da34.png[/img] B: [img=62x23]1803d3156256447.png[/img] C: [img=76x23]1803d3156a8e5f6.png[/img] D: [img=62x23]1803d315729d3bb.png[/img]